infectious

As a verb fester

is to become septic; to become rotten.

As an adjective infectious is

transmitted from one person to another, usually through the air breathed.

As adjectives the difference between infectious and toxic

is that infectious is transmitted from one person to another, usually through the air breathed while toxic is having a chemical nature that is harmful to health or lethal if consumed or otherwise entering into the body in sufficient quantities.

As adjectives the difference between pandemic and infectious

is that pandemic is widespread; general while infectious is (pathology|of an illness) transmitted from one person to another, usually through the air breathed.

As a noun pandemic

is a pandemic disease; a disease that hits a wide geographical area and affects a large proportion of the population.

As adjectives the difference between infectious and infectible

is that infectious is (pathology|of an illness) transmitted from one person to another, usually through the air breathed while infectible is able to be infected; capable of infection.

As adjectives the difference between harmful and infectious

is that harmful is of a kind likely to be damaging; injurious while infectious is transmitted from one person to another, usually through the air breathed.

As adjectives the difference between infected and infectious

is that infected is referring to something that has received an infection while infectious is transmitted from one person to another, usually through the air breathed.

As a verb infected

is past tense of infect.

As adjectives the difference between infectious and noninfective

is that infectious is (pathology|of an illness) transmitted from one person to another, usually through the air breathed while noninfective is not infective.

As adjectives the difference between epidemic and infectious

is that epidemic is like or having to do with an epidemic; widespread while infectious is (pathology|of an illness) transmitted from one person to another, usually through the air breathed.

As a noun epidemic

is a widespread disease that affects many individuals in a population.

As adjectives the difference between infectious and transmittable

is that infectious is transmitted from one person to another, usually through the air breathed while transmittable is able to be transmitted.

As adjectives the difference between infectious and transmissible

is that infectious is transmitted from one person to another, usually through the air breathed while transmissible is able to be transmitted.